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Finding the Fourth Proportional to 498,147.28, 747,440.16 and 261,432.88

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Solution

The fourth proportional to 498,147.28, 747,440.16 and 261,432.88 is: 392,264.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,147.28 : 747,440.16 = 261,432.88 : x
  2. Step 2: Convert to fraction form
    498,147.28/747,440.16 = 261,432.88/x
  3. Step 3: Cross multiply
    498,147.28x = 747,440.16 × 261,432.88
  4. Step 4: Simplify right side
    498,147.28x = 195,405,433,656.46
  5. Step 5: Solve for x
    x = 195,405,433,656.46/498,147.28
  6. Step 6: Final answer
    x = 392,264.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.